chore(portfolio): add build arg for environment

apps/portfolio/base/job.build-site.yaml

@@ -10,6 +10,8 @@ spec:
         image: gcr.io/kaniko-project/executor:latest
         args: 
           - "--context=git://git.nc.landry.land/davad/portfolio-site.git" # Need to set env GIT_USERNAME and GIT_PASSWORD
+          #- "--build-arg 'HUGO_ENVIRONMENT=production'"
+          - "--build-arg 'HUGO_ENVIRONMENT=staging'"
           - "--destination=registry.int.nc.landry.land/portfolio-site:$TAG" # Need to set TAG somehow. Maybe this goes in the overlays?
         volumeMounts:
           - name: kaniko-secret